import java.util.*;
public class Example4_11 {
   public static void main(String args[]) {
     Scanner scanner = new Scanner(System.in);
     int [] a = {12,34,9,23,45,6,45,90,123,19,34};
     Arrays.sort(a);
     System.out.println(Arrays.toString(a));
     System.out.println("输入整数，程序判断该整数是否在数组中:");
     int number = scanner.nextInt();
     int index=Arrays.binarySearch(a,number);
     if(index>=0)
        System.out.println(number+"和数组中索引为"+index+"的元素值相同");
     else   
        System.out.println(number+"不与数组中任何元素值相同");
    }
}
